A research paper requires a general understanding of the subject matter, a thesis as to what you plan to prove throughout the paper, and academic sources to support your thesis. In order to develop a thesis statement about thyroid disorders, you first need to understand the definitions of the key terms hyperthyroidism and hypothyroidism.

According to the Mayo Clinic, hyperthyroidism is an overactive thyroid, indicated when the thyroid produces extra thyroxine. This disorder causes an increased metabolism which can lead to weight loss and an irregular heartbeat. Hypothyroidism, on the other hand, is caused when the thyroid does not produce enough thyroxine. Ultimately, this can cause some patients to experience infertility, heart disease, obesity, and related health issues.

In order to frame this as a thesis, you'll have to decide what you care the most about and want to prove through your paper. On the topic of thyroid disease, you could choose to focus on diagnosing, treating, or curing the disease; the prevalence of the disease in certain groups; lesser-known thyroid conditions; and so on. Once you choose your area of concern, you need to construct a sentence that summarizes what you plan to prove in the pages that follow. An example of a thesis statement one could choose as a focus on this topic would be:

While the symptoms of hypothyroidism may not be present consistently throughout a patient's life, the long-term effects of the disease can be debilitating, and early detection and treatment is vital to controlling the disease.

The American Thyroid Association, at the link below, is a good source of information about thyroid disease. The thyroid is an endocrine gland that is in the base of the neck. It secretes hormones that are critical in many bodily functions, such as using the energy from food and maintaining body temperature.

In the case of hyperthyroidism, the thyroid secretes too much thyroid hormone. There is often a genetic component to this disease, which is also called Grave's Disease, though it can also be caused by lumps in the thyroid. People who suffer from this disease tend to lose weight and have other symptoms, such as anxiety and perspiration because their bodily processes are too speedy. Hypothyroidism, on the other hand, is caused when the thyroid produces too little thyroid hormone, making a person feel colder and more sluggish as the body's processes are slowed down. This disease can be caused by many factors, including autoimmune disease. Your thesis might focus on the vital role the the thyroid plays in regulating many bodily functions and the way in which the overproduction or underproduction of hormones by the thyroid can result in many adverse side effects throughout the body.